Yes, you can migrate EML file to office 365. EML to PST converter software supports migration of EML files to PST, Live Exchange & Office 365.
This software supports both UNICCODE and NON-Unicode formats and allow user save data as per his requirements.
No, this software has never change Meta data and folder hierarchy after conversion, so your structure of your data will remain same after conversion.
Yes, Outlook must be installed on the system at the time of migration. You can run it on any Outlook installed system.